30 years at this and she can't stop. >> let's put that there, let's go buy that. and it becomes -- >> reporter: lucy's house. cops block the street so it's safe to stroll. >> you're happy. you're smiling. how can you not smile when you see all this decoration. nobody does this. >> reporter: well, maybe not exactly. there's a house in tracy, california, fitted out like it's a long time ago in a galaxy far, far away and a guy in las vegas whose house turns into a juke box, topping the charts, metallica. >> reporter: daylight in december is hard to come by, so from ancient times people have done their best with candles and greenery.